Control system for remotely positioned radio apparatus



7m fm1 y VA Nav. 5, 1946.

D. H. CHANEY CONTROL SYSTEM FOR REMOTELY 'POSITIONED RADIO APPARATUS Filed May 3, 1945 bwk 32006 /Nvs/vra@ @4l/fa @94A/5V Arron/wey EHI Vy Patented Nov. 5, 1946 CONTROL SYSTEM FOR REMOTELY POSITIONED RADIO APPARATUS David H. Chaney, United States Army, Cass County, N. Dak.

Application May 3, 1945, Serial No. 591,762

(Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) 4 Claims.

The invention described herein may be manufactured and used by or for the Goverment forgovernmental purposes, Without the payment to me of any royalty thereon.

This invention relates to remote control devices,

and more particularly to a device for remotelym ,ccntrollingwradionannaratusmused for military purposes.

Due to the possibility of ready discovery by enemy direction nders, the farther a radio set is kept from command posts and the like, the safer will be the personnel and equipment.

It is, therefore, an object of this invention to provide a remote control device which may be located a mile or more away from a radio set and still provide satisfactory radio communication.

A further object is the vprovision of a remote control device for a radio set requiring only two wires which can be reversed at either end of the line without aiecting the operation of the system.

These and other objects are attained by the novel arrangement circuits hereinafter disclosed and illustrated by the accompanying drawing, forming a part hereof, and in which the figure is a schematic wiring diagram of a circuit embodying the invention.

Referring to the drawing, the remote control system is shown to comprise a microphone plug I anda headphone plug 2, which are adapted to be plugged into jacks in a radio set in a well known manner. Plug I is in circuit with relay 5 and lter choke 'I. Relay 5 is in parallel with capacitor 4; and choke I is in series with a relay including a switch 9, which closes when the microphone is operating. Also associated with plug I is a relay including a switch 8 which closes when the microphone is operated.

The microphone circuit proceeds from the plug I through relay 5 and choke 1 to a terminal I2, thence through a wire which may pass over a reel I5 thence to a clip I6 and to a jack I3, which receives the microphone. The microphone is of the type having a switch by means of which it can be rendered operative or inoperative. From jack I3, the circuit proceeds through clip I'I to reel I5 and to terminal II, and thence back to plug I.

In parallel with jack I3 is a jack I4 to receive the terminals of a headset. When the headset is connected to the jack I4, the microphone switch is opened to render the microphone circuit inoperative. When this occurs, switches 8 and 9 will be open, and a relay including a switch I in the headset circuit will be closed to complete the headset circuit. l

There Will now be established a circuit from the headset plug 2, through switch I0, terminal I2, over reel I and clip I6 to Jack I4, and back through clip I1, over reel I5, to terminal II, and thence to plug 2. When the headset circuit is functioning, the microphone circuit is inoperative, and vice versa.

The clips I6, I1, enable the remotely positioned jacks I3, I4 to be conveniently attached to the ends of a pair of wires wound about reel I5. Preferably, the wires passing over the reel are twisted.

From the above description it will be seen that there has been provided a simple and elective device for remotely controlling radio apparatus used in military operations.

The above description is to be considered as descriptive and not limitative of the invention, of which modifications may be made without departing from the spirit of the invention as set forth in the appended claims.

The invention having been described, what is claimed is:

1. In a remote control device for izan/lig(` apparatus, a u,iacljztfor receiving a microphone, a jack for a headset, a rst plug/for insertion in a remotely positioned ral'ofapparatus, a circuit connecting the lirst plug with the microphone jack, switches in said circuit which are closed when the microphone circuit is operated, a second plug adapted for insertion in radio apparatus, a circuit connecting said second plug with the headset jack, a switch in the headset circuit, and means for maintaining the last mentioned switch open when the microphone circuit is in operation.

2. In a remote control device for radio apparatus, a jack for receiving a microphone, a jack for receiving a headset, a first plug for insertion in a radio apparatus and included in a circuit with the microphone jack, a second plug adapted for insertion in a radio apparatus and included in a circuit with the headset jack, and means for rendering the headset circuit inoperative when the microphone circuit is operating.

3. In a remote control device for radio apparatus, a microphone, a headset, a circuit connecting the microphone to a radio apparatus, switches in said circuit which are closed when the microphone is in operation, a circuit connecting the headset with the radio apparatus, a switch in the headset circuit, and means to open the switch in the headset circuit when the microphone circuit is in operation.

4. In a remote control device for radio apparatus, a microphone, a headset, a circuit connecting the microphone to a radio apparatus, a, circuit connecting the headset to the radio apparatus, and means controlling said circuits so that the two circuits cannot be in operation simultaneously.

DAVID H. CIEIIANESZ'. 

